Acids, Bases and Salts - Chapter Wise CBSE Solved Question and Answer Based On NCERT
Short Q&A:
Q1: Explain the acids and bases with their properties, differences and examples.
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Ans: Acids
Acids are sour in taste
The chemical nature of such substances is acidic
Acid turns blue litmus red
It gives hydrogen ion when dissolves in water
Do not give any colour with phenolphthalein indicator
Do not absorb carbon dioxide gas
Acids do not react with ammonium salt
Acids are generally found in Vinegar, Curd, Spinach, lemons, Citrus fruits, Amla, Tamarind, grapes, unripe mangoes, Citrus fruits such as oranges, etc.
Bases
Bases are bitter in taste and soapy to touch
Base turns red litmus blue
The nature of such substances is said to be basic
It gives hydroxide ions when dissolves in water
It give pink colour with phenolphthalein indicator
Some bases like NaOH absorbs carbon dioxide gas
Bases are generally found in lime water, soap, window cleaner, Milk of Magnesia
Reacts with ammonium salt to give ammonia gas
Acid
Bases
1. Acids are sour in taste
2. The chemical nature of such substances is acidic.
3. Acid turns blue litmus red.
4. Acids are generally found in Vinegar, Curd, Spinach, Amla, Citrus fruits, Tamarind, grapes, unripe mangoes, Citrus fruits such as oranges, lemons, etc.
5. Acids do not react with ammonium salt
6. Do not absorb carbon dioxide gas
Bases are bitter in taste and soapy to touch.
The nature of such substances is said to be basic.
Bases turn red litmus blue
Bases are generally found in lime water, soap, window cleaner, Milk of Magnesia
Reacts with ammonium salt to give ammonia gas
Some bases like NaOH absorbs carbon dioxide gas
Q2: explain the process of neutralisation along with an example
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Ans:
15. Neutralisation is a process in which an acid solution when mixed with base solution, react with each other to produce a salt and water along with generation of heat. Salt so produced, may be acidic, basic or neutral in nature. In this process the acidic nature of the acid and the basic nature of the base are destroyed.
Acid + base salt + water. (heat is evolved)
For example: H C l + N a O H NaCl + H2O.
